>> on january 30, japan says the chinese navy locked its radar on a japanese destroyer in the east china sea. about 10 days earlier, tokyo says another chinese for gates -- chinese frigate did the same to a helicopter. japan cost prime minister condemned the incident. >> at a time they are resuming talks, it is regrettable china has carried out provocative action towards japan. >> the incidents are reported to have taken place close to this group of islands in the east china sea, which japan controls but china claims as its own. for months japanese and chinese coast guard ships have been engaged in a game of cat and mouse aroundot the islands. china has sought to assertsl its claims. previous incidents have only involved civilian ships, not war ships loaded with missiles. so far china's foreign ministry has refused to confirm the incident or give any explanation to the chinese actions, but the u.s. government is expressing its concern. it has called on beijing to avoid actions that could undermine peace and stability of the region. >> there are 365 days left until the next winter olympic